0
votes
0answers
22 views

ELB Health Checks incorrectly failing / being unhealthy

Over the weekend, our instances have started being marked as unhealthy, and not being enabled within the load balancer. When going to the public DNS of the instance, followed by the healthcheck.html ...
-2
votes
3answers
50 views

Get AWS ELB name from an attached instance

I created one ELB and attached a few instances to this ELB. So when I login into one of these attached instance, I would like to type a command or run a nodejs script that can return me the its ELB ...
3
votes
1answer
720 views

What algorithm does Amazon ELB use to balance load?

I found this in the official ELB documentation By default, a load balancer routes each request independently to the application instance with the smallest load. but an article on Newvem says ...
0
votes
1answer
368 views

Do AWS ELB, HAProxy or nginx drop the connection if a backend servers is down?

I wonder which ones of the following load balancers is able to detect an unavailable backend machine, and redirect the connection to another server without dropping the request: nginx AWS Elastic ...
1
vote
1answer
528 views

Amazon ELB and multi domain on Nginx server

I have an EC2 instance running Nginx with several domains. My config starts like this: server { listen 80; #disable_symlinks off; server_name _; #allow few domains #Adding 'www.' to ...
0
votes
1answer
92 views

“Big picture” to use Amazon load balancer solution for blog

I have a client with a popular Wordpress blog that experiences occasional short-term traffic spikes (when the site is promoted on national TV). The blog is already hosted on an Amazon EC2 instance, ...
0
votes
2answers
602 views

Reverse Proxy Server Cloud Architecture (AWS + nginx)

Currently I cache responses using nginx + fastcgi. I'm in the process of moving my app to AWS. I'm architecting a horizontally scaled approach, but trying to determine where best to put nginx + ...
0
votes
1answer
133 views

Guaranteed HTTP forwarding frontend service (reliable cloud load balancer) [closed]

My situation is fairly simple and, I guess, it's encountered fairly often. I have several projects which all look pretty much the same - a single project consists of: Static content servers - there ...
1
vote
1answer
484 views

Load balancer with Varnish round robin

I'm looking at a setup of an existing application. This application makes use of Amazon's elastic load balancer and then it goes through varnish. Within varnish, we are making use of the round robin ...
0
votes
1answer
278 views

Amazon ELB page 'recieving' time very slow, running EC2 + spot

I have an Elastic Load Balancer paired to a set of instances one is persistant and the other is a variable number of spot instance. When i access the servers directly using their end points, the ...
3
votes
1answer
139 views

How to find out the location of Google IP number: e.g. 209.85.143.94

I am building DNS service and I need to find out location of DNS servers querying me. Apparently anyone who is using Google public DNS like 8.8.8.8 is coming from Google /17 network, and if I do geoip ...
0
votes
0answers
229 views

AWS SSL Load Balancer

OK, I am looking for some pointers. Basically I have a white-label app/site that will allow users to setup their own domain to use for their customer front-end. We have 2 dedicated servers and a load ...
1
vote
3answers
303 views

AWS Elastic load balancer doesn't decrease instances from Alarm Trigger

I have a load balancer that I created an auto-scaling-group and launch-config for. I created the auto-scaling-group with a min-size of 1 and max size of 20. I have a scaledown policy: ...
5
votes
2answers
752 views

Load Balancing on Amazon (AWS) and staying up to date

I would like to have a load balancer for my site and have the site up to date. The load balancer will take the AMI I select and spin up more of those instances when processing power hits a certain ...
3
votes
3answers
1k views

Load testing sites behind an EC2 load balancer with ApacheBench

When ever I try to load test a site that is load balanced on EC2 I get the following message: ab -n 20 -c 20 http://www.somesite.com/ Benchmarking www.somesite.com (be patient)...Send request ...
0
votes
0answers
390 views

How to debug when ELB fails but nginx looks ok?

I'm using Amazon's elastic load balancing across several machines that are running nginx. The problem is, after running for fifteen minutes or so, ELB starts to mark all of the machines as dead. When ...
3
votes
2answers
295 views

Elastic Load Balancing using a chain of domains/hosts

I've setup an elastic load balancer on EC2 which (for example) has the public DNS (A Record) of: LB-165746761.eu-west-1.elb.amazonaws.com I've then registered a domain which I want to act as my ...
1
vote
3answers
502 views

Can you change an AWS Elastic Load Balancer health check without causing instances to go out of service?

For a number of reasons I need to change the health check URL of a live site behind an ELB. The ELB is configured for health checks every 30 seconds, with a healthy threshold of 2 and unhealthy ...
1
vote
1answer
71 views

AWS - Load balance to different clusters

So I'm using ELB to load balance incoming requests. Is it possibile to make the ELB listen on two ports and, for example, route all the request made to port 80 to a specific set of instances, and ...
2
votes
2answers
393 views

ELB Alternatives for AWS when transferring large amount of data

So I got a unique problem. Our app is designed to server large amount of files using a special link that is one time use. We have been playing with ELB but notice an interesting "bug", if you start ...
0
votes
1answer
666 views

Working of Amazon Elastic Load Balancers

I've a Amazon ELB behind which there are 3 EC2 instances distributed across 3 zones. Following are extracts of access logs on each instances: 1st instance(Zone A): 10.210.214.231 - - ...
2
votes
3answers
643 views

Proxy to load balancer, bandwidth?

I have an Amazon Elastic Load Balancer. I can't set my domain apex -- domain.com to the ELB because Amazon doesn't provide an IP. If I: set up a new EC2 instance (whih has its own IP) set up a ...
2
votes
1answer
655 views

Amazon ELB and private IP addresses

We are considering using Amazon's ELB for load-balancing requests to internal API servers. If we use it, do we have to route our traffic through the public IP addresses, and thus lose the speed and ...